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Previous studies have observed a link between gender and well-being and health in young populations. The purpose of this research was twofold: (1) to analyse the cross-sectional relationship between gender status with well-being indicators and self-perceived health in adolescents at baseline and at 2-year follow-up and (2) to evaluate the prospective associations between gender at baseline and well-being indicators/self-perceived health assessed at 2-year follow-up. Well-being was measured using the KIDSCREEN-10 questionnaire (as a measure of health-related quality of life (HR-QoL)), the Children's Hope Scale and the Positive and Negative Affect Schedule. Health status of the adolescents was assessed using self-perceived health. Multilevel mixed-effects linear/logistic regression models were carried out to assess the associations between gender status and well-being and health of a sample of 1590 Spanish adolescents. Adolescent girls were shown to have lower HR-QoL scores and higher negative affect scores, and had a higher risk of reporting poor health than boys, in both cross-sectional and longitudinal analyses. Adolescent girls seem to be more vulnerable to poorer well-being and self-reported health than boys. When looking at hedonic and eudemonic well-being separately, longitudinal differential evolution of boys and girls seems to indicate greater deterioration of hedonic well-being among girls as compared to boys. Overall, gender may have a relevant impact on mental and physical health during adolescence. Ministerio de Ciencia e Innovación (DEP 2010-21662-C04-00) 7.521 Q1 JCR 2021 1.698 Q1 SJR 2021 No data IDR 2021 UEM

The aim of this study was to examine the bidirectional longitudinal associations of several markers of fatness and physical fitness in adolescents with Down syndrome.This study comprised a total of 111 adolescents (41 females), aged from 11 to 20 years with complete data at the baseline. We had a drop-out of10% from the baseline to the 2-year follow-up. The ALPHA health-related fitness test battery for youth was used.Our results show that all fatness variables at the baseline were associated with a 2-year change in cardiorespiratory fitness (β ranging from -0.32 to -0.38; all p .05), but not with muscular and motor fitness (p .05). However, no associations were found between physical fitness components as predictors and fatness indicators (p .05).Results suggest that reducing fatness during adolescence might represent a modifiable factor to improve cardiorespiratory fitness at the 2-year follow-up, but not vice versa since associations were not bidirectional.

Objective: The aim of this study is to compare the levels of physical activity and sedentary behaviours in children with obesity and normal weight through accelerometer measures, and analyze the family environment related to physical activity. Design: Case-control study. Location: A health center and colleges of the Community of Madrid. Participants: A total of 50 obese children between 8 and 12 years of age (P > 97) and their mothers were matched by age, sex and socioeconomic status of their parents (1: 1) with 50 children with normopeso (GN; P < 85). Main measurements: Physical activity levels were measured by accelerometer (ActiGraph GT3X), levels of physical activity of the primary caregiver were measured through physical activity questionnaire (IPAQ) and the environment in relation to the physical activity was measured by the Home Environment Scale (HES-S). Results: The group GO showed less vigorous physical activity than their peers in the GN group. Vigorous physical activity in the GO group was associated with modeling and parental policies regarding physical activity. A multiple regression analysis revealed that 21% of the variance of weight status of children was explained by sex, vigorous physical activity and maternal body mass index. Conclusions: The levels of vigorous physical activity and the family environment differ between children with obesity and normal weight. Therefore, it is important to continue working on the awareness of illness and the promotion of healthy habits from Primary Care and the school and institutional context., Objetivo: Comparar los niveles de actividad física y sedentarismo en niños con obesidad y normopeso, y analizar el nivel de actividad física del cuidador principal junto con el ambiente familiar.Diseño: Estudio caso-control.Emplazamiento: Un centro de salud y colegios de la Comunidad de Madrid.Participantes: Un total de 50 niños con obesidad entre 8 y 12 años (GO; P > 97) y sus madres,fueron emparejados por edad, sexo y estatus socioeconómico de sus padres (1:1) con 50 niños con normopeso (GN; P < 85).Mediciones principales: Los niveles de actividad física se midieron por acelerometría (Acti-Graph GT3X), la actividad física del cuidador principal con el cuestionario de actividad física(IPAQ) y el ambiente con el cuestionario de ambiente familiar (HES-S).Resultados: El grupo GO presentó menos actividad física de tipo vigoroso al compararse con el grupo GN. La actividad física vigorosa en el GO se asoció al modelado y las políticas parentales respecto a la actividad física. Un análisis de regresión múltiple muestra que el 21% de la varianza del estatus de peso de los niños se explicaba por la actividad física vigorosa y el índice de masa corporal materno.

The aims of this study were (i) to examine the sedentary time (ST) during different time periods [i.e., weekend, out-of-school weekdays hours, school hours, recess, physical education classes (PEC)] in children and adolescents; (ii) to identify 2-year longitudinal changes in the ST for these periods; and (iii) to examine if ST at baseline is associated with ST 2 years later. This was a 2-year follow-up study with 826 (51.9% boys) children and 678 (50.7% boys) adolescents. Accelerometers were used to assess ST. Students spent more than 60% of their weekend, out-of-school hours and school hours in ST. During these periods, girls and adolescents were more sedentary than boys and children, respectively (p 0.05). Over 2-year follow-up, ST increased during the weekend, out-of-school hours, school hours and recess in all subgroups studied (p 0.001). ST during PEC declined 2% per year in children (p 0.001) but it increased in adolescents (p 0.05). ST during the periods analysed at baseline was lowly associated with ST during these periods 2 years later (intraclass correlations from0.001 to 0.364). Interventions in these settings may be adequate if the intention is to avoid ST increase in students.

[Background]: The main objective of this study was to describe the inflammatory status of adolescents with Down syndrome (DS) and their relationship with adiposity., [Methods]: Ninety‐five adolescents with DS (44.2% girls) and a control group of 113 adolescents (47.8% girls), aged between 11 and 18 years old, from the UP & DOWN study were included in this substudy. Serum C‐reactive protein, C3 and C4 complement factors, total proteins, interleukin‐6, tumour necrosis factor‐α, insulin, cortisol, leptin, adiponectin, galactin‐3 and visfatin were analysed; homeostatic model assessment index was calculated. In order to evaluate adiposity, we measured the following body fat variables: weight, height, waist circumference and skinfold thicknesses. Birth weight was obtained by questionnaire. In addition, body mass index, waist‐to‐height ratio (WHtR) and body fat percentage (BF%) were calculated., [Results]: Down syndrome group showed higher levels of body mass index, WHtR, waist circumference, BF% and lower birth weight than controls (P < 0.001). In the general linear model in the total sample, WHtR was positively associated with C3 and C4 (P < 0.001) as well as with leptin levels (P = 0.015). BF% was positively associated with total proteins (P = 0.093) and leptin levels (P < 0.001). DS was positively associated with total proteins (P < 0.001), C3 (P = 0.047) and C4 (P = 0.019). Despite the higher levels of adiposity found in DS group, no direct association was found between BF% and leptin levels, comparing with the control group., [Conclusions]: These findings suggest that abdominal obesity should be controlled in adolescents because of its relationship with acute phase‐inflammatory biomarkers but especially in DS adolescents who may show a peculiar metabolic status according to their relationship between adiposity and inflammatory biomarkers., We appreciate the following financial support: DEP 2010‐21662‐C04‐00 grants from the National Plan for Research, Development and Innovation (R + D + i) MICINN.

This study investigated the associations between the characteristics of the nearby physical environment with the total and domain-specific leisure-time sedentary behaviour (SB) in young people. The study included 1578 youth (9-18 years) from the UPDOWN study. Total leisure-time SB was objectively-assessed by accelerometers. Participants self-reported the time spent during leisure-time in different domains of SB (i.e. screen-based, educational-based, social-based, and other-based SB). Information regarding the basic characteristics of the house, the perceived neighbourhood environment, the amount of physical activity facilities, equipment and materials attainable at home, and the media equipment available at home and in the own bedroom was collected. Linear mixed models were performed, including school and city as random effects. The availability of yard was related to lower total SB and time spent surfing the Internet in boys, but not in girls. More favourable perceived neighbourhood environment was associated with lower total SB and time spent playing video games in girls, but not in boys. The amount of physical activity materials at home was negatively associated with screen-based SB, while the availability of a computer in the own bedroom was positively related to the time spent surfing the Internet in boys and girls. The number of televisions at home and having a computer in the own bedroom was associated with lower time in educational-based SB in boys and girls, respectively. Increasing the number of PA materials at home and decreasing the number of TVs at home and the availability of a computer in the bedroom could improve SB profiles of youth.

Objective: The aims of the present study were to analyze the associations between the socio-demographic and familiar circumstances with: (i) the total leisure-time sedentary behavior (SB) assessed by accelerometry, and (ii) the domain-specific leisure-time SB (i.e., screen-based, educational-based, social-based, and other-based SB), in a sample of Spanish youth. Method: The sample consisted of 1,543 youth (12.02 ± 2.51 years) included in the UPD however, socio-demographic and family circumstances differently associated with SB according to the domain-specific SB, the sex and the type of day. For example, participants with a father holding a high-skilled occupation spent lower time in screen-based SB during weekdays; and mother occupation status of high qualification was related to higher educational-based SB in boys. Having three or more sibling was associated with lower total SB in boys, while having an obese mother was related to higher screen-based SB on weekends both in boys and girls. Conclusions: Socio-demographic and familiar circumstances are associated with SB in young people, so future interventions should consider multiple and sex-specific factors for reduce SB of young people, focusing especially on youth with a low number of siblings and with parents holding low-skilled employments.

Objectives: Previous research has postulated immigrant status as a relevant factor influencing eating disorder (ED) risk in adolescents. The present study assesses differences by sex in ED risk between Spanish native and immigrant adolescent populations residing in Spain and analyzes longitudinal differences in ED risk between immigrant and native adolescents over 2-year follow-up. Method: The study sample was 981 adolescents aged 11-19 years at baseline. ED risk was evaluated using the Spanish version of the SCOFF Questionnaire. Logistic regression was used to value associations between country of origin and ED risk prevalence by sex, as well as changes in ED risk at 2-year follow-up. Results: Immigrant adolescent girls and boys presented greater ED risk than their Spanish counterparts. Prospective analyses showed that immigrant boys presented greater likelihood of acquiring ED risk over 2 years compared to Spanish adolescent boys. Conclusion: Immigrant adolescent populations, particularly boys, seem to be vulnerable to ED. (PsycINFO Database Record (c) 2019 APA, all rights reserved). Spanish Government (DEP 2010-21662-C04-00) Universidad Autonoma de Madrid 2.147 JCR (2019) Q1, 4/20 Ethnic Studies 1.343 SJR (2019) Q1, 40/315 Social Psychology No data IDR 2019 UEM

[Background]: We aimed to examine the independent and combined associations of cardiorespiratory fitness, muscular fitness, and motor ability with single and clustered inflammatory biomarkers in children and adolescents., [Methods]: This study included 503 children and adolescents. Cardiorespiratory fitness, upper- and lower-muscular fitness, and motor ability were assessed using field-based tests. Fasting blood samples were obtained to determine the levels of a set of inflammatory biomarkers. Global physical fitness and clustered inflammatory biomarker scores were computed. Associations between physical fitness and inflammatory biomarkers were analyzed through linear regression. Differences in inflammatory biomarker levels between physical fitness tertiles were tested., [Results]: Global physical fitness was inversely associated with single and clustered inflammatory biomarkers in children (p, [Conclusion]: Physical fitness was negatively associated with single and clustered inflammatory biomarkers, independently of body mass index. Increasing physical fitness levels in youth might contribute to reduce the cardiovascular risk., This work was supported by the National Plan for Research, Development, and Innovation (R + D + i) from the Spanish Ministry of Science and Innovation [DEP 2010-21662-C04-00 (DEP 2010-21662-C04-01: DEP 2010-21662-C04-02: DEP 2010-21662-C04-03: DEP 2010-21662-C04-04)]; and by the Spanish Ministry of Education [FPU15/05337].

Objectives To examine clustering of lifestyle behaviors in Spanish children and adolescents based on screen time, nonscreen sedentary time, moderate-to-vigorous physical activity, Mediterranean diet quality, and sleep time, and to analyze its association with health-related physical fitness. Study design The sample consisted of 1197 children and adolescents (597 boys), aged 8-18 years, included in the baseline cohort of the UP&DOWN study. Moderate-to-vigorous physical activity was assessed by accelerometry. Screen time, nonscreen sedentary time, Mediterranean diet quality, and sleep time were self-reported by participants. Health-related physical fitness was measured following the Assessing Levels of Physical Activity battery for youth. A 2-stage cluster analysis was performed based on the 5 lifestyle behaviors. Associations of clusters with fatness and physical fitness were analyzed by 1-way ANCOVA. Results Five lifestyle clusters were identified: (1) active (n = 171), (2) sedentary nonscreen sedentary time-high diet quality (n = 250), (3) inactive-high sleep time (n = 249 [20.8%]), (4) sedentary nonscreen sedentary time-low diet quality (n = 273), and (5) sedentary screen time-low sleep time (n = 254). Cluster 1 was the healthiest profile in relation to health-related physical fitness in both boys and girls. In boys, cluster 3 had the worst fatness and fitness levels, whereas in girls the worst scores were found in clusters 4 and 5. Conclusions Clustering of different lifestyle behaviors was identified and differences in health-related physical fitness were found among clusters, which suggests that special attention should be given to sedentary behaviors in girls and physical activity in boys when developing childhood health prevention strategies focusing on lifestyles patterns.

[Purpose]: To examine the association between adherence to the Mediterranean diet and academic performance in children and adolescents. [Methods]: This is a cross-sectional study conducted with 1371 youth aged 12.04 ± 2.50 years (685 girls) in Spain during 2011–2012. Adherence to the Mediterranean diet was assessed using the KIDMED index (Mediterranean Diet Quality Index in children and adolescents), which includes 16 questions on specific dietary patterns. Levels of adherence were classified into three groups: poor adherence (0–3), average adherence (4–7), and good adherence (8–12). Academic performance was assessed through school records using four indicators: math, language, an average of math and language, and grade point average score. [Results]: Adherence to the Mediterranean diet was related to academic performance (β ranging from 0.107 to 0.148; all P, The UP&DOWN study was supported by the DEP 2010-21662-C04-00 Grant from the National Plan for Research, Development and Innovation [R+D+i] MICINN.

Objective: To examine the association of maternal physical activity before and during pregnancy with academic performance in youth. Methods: This study included 1868 youth (6–18 years) and their mothers. Mothers recalled their physical activity before and during pregnancy. Mothers were categorized into four groups: ‘‘remained active’’, ‘‘became inactive’’, ‘‘became active’’ and ‘‘remained inactive’’. Academic performance was assessed through school records. Results: Boys whose mothers practiced physical activity before or during pregnancy had significantly higher scores in academic performance indicators independently of physical activity, fitness, current body mass index (BMI) and birthweight than those whose mothers did not practice physical activity before or during pregnancy (all p50.05). In addition, boys whose mothers remained active had higher scores in all academic indicators (ranging from +0.358 to +0.543) than boys whose mothers remained inactive. Boys whose mothers remained active had higher scores in Language (score +0.546; 95% CI, 0.150–0.940), average of Math and Language (score +0.468; 95% CI, 0.100–0.836) and grade point average (GPA) (score +0.368; 95% CI, 0.092–0.644) than boys whose mothers became active. Conclusions: Maternal physical activity before and during pregnancy may positively influence youth’s academic performance. Continuing maternal physical activity practice during pregnancy may have greater benefits for youth’s academic performance.

The aim of this study was to identify potential correlates of sedentary time and television (TV) viewing time in youth with Down syndrome (DS). A total of 98 adolescents with DS (63 males) aged 11-20 years old participated in this study. Total sedentary time was measured using accelerometers, while total TV viewing time and potential correlates were measured using proxy-report questionnaire. Analyses of covariance and a stepwise multiple linear regression were performed to examine correlates of total sedentary time and total TV viewing time. Different potential correlates were associated with total sedentary time (mother age, mother TV viewing time, perceived benefits of physical activity, birth order and having nearby shops in the neighbourhood) and total TV viewing time (father TV viewing time, TV viewing time with parents, family dietary habits during watching TV and weekend days time indoor). The identification of correlates associated with sedentary behaviour, principally those considered modifiable such as social and environmental factors, may contribute to development strategies to decrease sedentary behaviour in adolescents with DS and consequently promote a healthier lifestyle.